Printing punch



Sept. 3, 1935. u. KLM ET AL 2,013,540

PRINTING PUNCH Filed Oct. '7, 1933 2 SheetS-Sheet l TTORNEY U.KLM ETAL PRINTING PUNCH Sept 3,1935.

Filed Oct. 7, 1933 2 SheetS-Sheet 2 lNvE ToRS Y Www/ TTORNEY Patented Sept. 3, 1935 UNITED STATES- PBINTING PUNCH Ulrich Klm, Berlin, and Armin Kthner, Dresden, Germany, assignors to International Business Machines Corporation, New York, N. Y., a corporation of New York Application October 7, 1933, Serial No. 692,584 In Germany April 11, 1933 8 Claims.

This invention relates to punching machines of the type adapted to perforate index point positions of Statistical record cards.

The invention relates more specifically to the 5 provision of a printing device for such punching machines whereby the value of the data perforated in successive colunms of the record card may be simultaneously recorded in another position on the same record card.

Printing mechanisms have heretofore been devised and incorporated in punching machines for this purpose, but they have been largely of a complicated nature and additional complicated mechanisms have been provided to insure correspondence between the value of the perforated data and the value of the printed data.

A more specific object of the present invention is to provide an attachable printing mechanism for punching machines which may readily be applied to existing machines and in which provision is made for insuring positive positioning of the printing elements to represent the data perforated. I

Various other objects and advantages of the invention will be obvious from the following particular description of one form of mechanism embodying the invention or from an inspection of the accompanying drawings; andthe invention also constitutes certain new and novel features of construction and combination of parts hereinafter set forth and claimed.

In the drawings:

Fig. 1 is a plan view of a well known type of key operated punch to which the present invention may be applied.

Fig. 2 is a central section through the Operating mechanism of the punching machine, the section being taken substantially along the lines 2-2 of Fig. 1.

Fig. 3 is a section taken along line 3-3 of Flg. 2.

Fig. 4 is a position view of parts shown in Fig. 1.

Fig. 5 is a further position view of similar parts.

Fig. 6 is a fragment of the record card showing the relationship between the perforations and the printed data; and

Fig. 7 is a detail of the card carriage escapement mechanism of the machine.

The punching machine to which the present invention may be applied is of the form shown in Patent No. 1,803,979, granted May 5, 1931, to J. T. Schaafi', and a brief description will now be given of its manner of operation. This description will be limited to the features essential to an understanding of the present invention.

The record card IO (Figs. 1 and 2) is positioned in the carrlage of the machine with its forward edge abutting a guide ll and its rear edge abutting a pusher |2. The pusher |2 is connected to the carriage escapement rack |3 (Fig. 7) which is provided with gear teeth on its lower edge meshing with a gear il which has connection with the usual spring drum li. The spring drum iii normally urges the rack i3 toward the left as viewed in Fig. '7 and its movement in this direction is controlled by a pair of pawls iii and ll.

Each punching operation of the machine is accompanied by rocking of a rod |8 in a counterclockwise direction whereby a double-armed member 19 carried by the rod lowers pawl IG into engagement with the rack |3 to hold it momentarily while punching takes place and pawl il is raised out of engagement with the rack so that its spring 20 may advance. it slightly toward the right in readiness to engage the next succeeding tooth of the rack.

A number of punch selecting keys 2i are provided, there being one for each row of index point positions of the record card. Depression of any key 2| will rock a corresponding bell crank 22 one of whose arms has pin and slot connection with a punch. interposer 23 and will cause movement of the selected interposer toward the left to interpose its widest portion between a punch bar 24 and punch 25. Each interposer is notched as at 26 so that forward movement of any one of the interposers will rock a bail 27 pivotedat 23, which in turn will draw upwardly on a springpressed hook 29. Upward movement of hook e will cause closure of a pair of contacts 30, which is connected in the circuit of punch magnet 'i, thereby energizing the latter and causing it to attract its armature 32. which has connection through link 33, bell crank 36 and link 35 to a bail 36 which carries the punch bar 24. The bar 24 is thus rocked downwardly against the advanced interposer and will cause depression of the punch 25 to perforate the record card in the index point position corresponding to the key depressed. Lowering of the left end of interposer 23 will, incidentally, cause rocking of a bail 31 which abuts the lower edge of the interposers and which is carried on rod |3. This rocking will cause an operation of the escape- V ment mechanism to permit the card to advance to the next column to be perforated.

The manner in which the printing mechanism is attached to the perforating machine will now be explained. Positioned directly above `the row of punches 25 is a block 38 which is pivotally mounted on brackets 39 attached to the flxed frame of the punch. Integral with one end 'of the block and positioned in line with the upper margin of the record card is an arm 40 whose free end is arc-shaped and provided with a number of type elements 4| corresponding in number and configuration to the values of the index point positions of the record card. For each row of index point positions of the record card and in line therewith is provided a pair of screws 42 adjustably secured in the block 30, one screw being located above the center of rotation of the block and the other below the center. Secured to each interposer 23 is a member 43 having a cam surface 44 in line with the corresponding pair of screws 42. The pair of screws in any position is so adJusted that forward movement of an interposer 23 will move the cam surface 44 of the attached member 43 into engagement with the corresponding pair of screws 42 and cause rocking of block 38 and arm 40 into position to present the type element 4| corresponding to the interposer 23 selected for advancement.

In Fig. 4, the parts are shown in position with the zero key and related mechanisms in dotted outline, the parts being superimposed upon their normal full line positions. 38 and arm 40 are shown positioned to print a 9" under control of the 9" interposer 28 and its associated member 43. Printing is effected by means of a plunger 45 carried by a rod 46 suitably mounted for vertical movement.

The lower end `of the rod is connected to one i arm of a bell crank 41 whose other arm is connected by a link 48 to the armature 32 of magnet 8|. 'By virtue of this connection, the printing plunger 45 will be moved upwardly into engagement with the selected type concurrently with the operation of the selected punch. After punching and printing have been effected.`the interposers 23 and keys 2| are restored to their normal position by their restoring springs. The block 38 and arm 40, however, remain in the po- 's sition to which they have been set. The'means for retaining these parts in this position is a leaf spring 49, one end of which is secured to the frame of the machine and the other end is adapted to bear upon one of the pivot pins 50 of block 38, thereby creating sumcient frictional resistance against movement of the block. Accordingly, the following key depression will cause movement of the block 38 and arm 40 in either direction, depending upon the value of the next key depressed. Thus, if the first key depressed were zero, moving the parts as in Fig. 4 and the next key depressed were the "9 key, the arm 40 would be moved directly from its dotted line position of Fig. 'i to that of Fig. the movement, of course, being in a clockwise direction. i

By adjustably arranging the pairs of screws 42 in the block 38, the members 43 may all have the same configuration and due to the manner in which the cam surface 44 cooperates with the screws 42, it will be observed that the printing arm is positively positioned and positively locked against movement in either direction while printing and punching take place and that the printing arm 40 will always move the shortest distance to the next selected printing position.

A printing ribbon 5| is carried by a spool 52 to which is connected a spring barrel 53 which normally biases the spool in a clockwise direction, as viewed in Fig. 2. The free end of the ribbon passes around a roller 54 and is connected to the pusher |2 so that as the card carriage moves back and forth, the ribbon moves therewith and the slack thereof is taken up by the spool 52. By adjustably securing the end of the ribbon to the pusher |2, it may be shifted-slightly to present different points to the printing position.

While there has been shown and described and In Fig. 5, the block.

pointed out the fundamental novel features of the invention as applied to a single modification. it will be understood that various omissions and substitutions and changes in the form and details of-the device illustrated and. in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention therefore to belimited only as indicated by the scope ofthe following claims.

What lis claimed is as follows:

l. In a punchingmachine, a row of punches, one for each index point position of a column of a record card. a plurality of punch selectors, one for each punch, a type carrier having a type element for each punch, and means associated with each selector for moving the carrier to present the corresponding type element to printing position, said means serving also to lock the carrier against further movement.

2. In a punching machine, a row of punches, one for each index point position of a column of a record card, a pivoted type carrier adapted to print in line with said row of punches, apunch selector for each punch, each of which has an invariable extent of movement, and means associated with said carrier, adapted to be actuated by all of said selectors to rock said carrier to a different position for each selector whereby a different character will be presented for printing for each punch selected.

3. In a punching machine, a row of punches, a key-actuated selector for each punch. a pivoted typesector having a type for each punch, means forA Operating a selector to select a punch` means controlled by said selector to rock said sector in one direction to present the corresponding type in printing position, means for restoring said selector and means for retaining the sector in set position while the selector is being restored.

4. The invention set forth in claim 3 in which means is provided for causing the sector to rock in reverse direction upon the operation of another selector.

5. `The invention set forth in claim 3 in which subsequent operation of said selector will cause re-selection of the same punch without operating said sector. v

6. In a punching machine, a pivoted type sector, a plurality of stops associated therewith, one for each printing position of the sector, a row of punches, a punch interposer for each punch, means for selectivelyadvancing said interposers a common predetermined distance to render the associated punches effective, and means controlled by each interposer and cooperating with said stops to cause the sector to move a different amount for each interposer operated.

7. In a punching machine of the class described, a punch, a punch interposer movable in one direction to select said punch for operation, a pivoted printing sector, and means associated with said interposer for causing said sector to rock in either of two directions upon movement of the interposer in a punch-selecting direction.

8. The invention set forth in claim 7 in which the direction in which the sector is rccked is determined by the position it occupies prior to the .advance of the interposer. 

